The technology giant said in its security update pages for iOS and iPadOS 14.4 that the three bugs affecting iPhones and iPads “may have been actively exploited.” Details of the vulnerabilities are scarce, and an Apple spokesperson declined to comment beyond what’s in the advisory.
It’s not known who is actively exploiting the vulnerabilities, or who might have fallen victim. Apple did not say if the attack was targeted against a small subset of users or if it was a wider attack. Apple granted anonymity to the individual who submitted the bug, the advisory said.
Two of the bugs were found in WebKit, the browser engine that powers the Safari browser, and the Kernel, the core of the operating system. Some successful exploits use sets of vulnerabilities chained together, rather than a single flaw. It’s not uncommon for attackers to first target vulnerabilities in a device’s browsers as a way to get access to the underlying operating system.
Bug fixes to close potential exploits aren’t uncommon, but the lack of details around these is a little curious.